I have just noticed that when I group a picture, vector art, and type, and copy it into another file in CS6 it pastes the grouped image in a picture box (like a paste inside). Why?

Why does this happen in CS6 it didn't in CS5. It is a pain when you are going from your print magazine and copying things into your DPS files. It causes the picture to look like it isn't filling the box because it becomes a paste inside. Once you know this you can adjust it, but this doesn't seem like it is helping with anything. Why the change? Or is there a way to stop it from doing this?